Baking-oven.



No. 797,299. PATENTED AUG.15, 1905. J. F. LORENTZ.

BAKING OVEN.

APPLICATION FILED JULY 16, 1904..

2 SHEBTS-SHEET 1.

PATENTED AUG 15, 1905.

J. P. LORENTZ,

BAKING OVEN.

.1. Fifi! II III .I

JOI'IN F. LORENTZ, OF MANSFlELD, 01-110.

lElftMllNGwWl-IEN.

.ltl'o. 797.299.

Specification of Letters Patent.

Patented Aug. 15, 1905.

Application filed July 16, 1904. Serial No. 216,838.

To rtZZ wi'to'nt 'ITI/(I/U concern.-

.lle it known that .l, .l'oun F. Lolmn'rma citizen of the United States, residing at llrlanslield, in the county of ltichland and fltate of Ohio, have invented certain new and useful improvements in Bakil'ig-Ovens, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention relates to improvements in baking-ovens, and more particularly to that type known as double-deckers.

.l contemplate the construction of the oven so that gas may be employed as the heating medium, though it is permissible to use other fuel, the heat being maintained at a uniform temperature above and below the several ovens, thus providing a uniform temperature within each of the several ovens. Further, I aim to concentrate the heat at the front portion of the ovens, which has been found by experience to bake bread of an even color. The above objects are attained by the construction shown in the accompanying drawings, in which M Figure 1 is a :front elevation of my improved oven. Fig. 2 is a horizontal crosssectional view taken on line a a, Fig. 3. Fig. 3 is a longitudinal vertical sectional view taken on line :11 :r of Fig. 2, showing the interior construction. Fig-dis a horizontal cross-sectional view taken on line 7) Z) of Fig. 3.

Like characters of reference denote similar parts throughout the several views.

As shown in Fig. 2 of the drawings, the side walls B of the oven are shown as beingformed hollow, any material being employed which will answer the purpose, such as br'iclceement, or concrete. Solid walls may be used as well as those shown, and no limitation is therefore placed upon this feature.

Extending the height of the rear end wall and central thereof is the discharge-flue D for the egress of the smoke and heat, as shown, this flue being extended upwardly above the top wall of the oven to form a chimney. At the lower portion of the flue is formed an opening closed by a door E, enabling cleansing of the flue when necessary.

The front wall of the furnace is formed with a pair of vertical flues P P, which are located at the corners thereof, these fines likewise extending substantially the height of the front walls and having communication with the rear fine I) through the medium of the heating-- chambers Gr (l G, as shown, there being-three of the latter arranged horizontally, the lowermost one being disposed beneath the first oven, the intermediate one being disposed above the said oven and beneath the upper oven, and the top heating-chamber being arranged above the top oven.

The horizontal partitions which form the several ovens are formed by "IT-beams or girders J, which extend transverse of the oven and are supported by the side walls of the oven, said beams or girders supporting tiles K, which seat on the bases of the beams or girders. (Clearly shown in Figs. 3 and i.)

The front wall of the furnace is formed with openings which aline with the baking-chambers, these openings being closed by doors N N, which enable access to the bakingchambers. The door closes the opening M, which is likewise formed in the front wall to enable access to the furnace.

The base A of the oven supports the back wall S of the furnace, this wall extending vertically and meeting the lowermost of the partitions I, which is also true of the side walls T, which are inclined toward the front of the oven. Located between the side walls and to the front of the rear wall of the furnace are a pair of walls V V, which may be formed hollow, as shown, these walls being spaced from the partition I and from both the rear and side walls of the furnace, providing lines or passages, permitting egress of the heat. A space of considerable area is left between the walls V V to provide space for the grate-bars, (indicated at a) though it is preferred to use a gas burner or burners, as shown, at X, the supply-pipe 1 extending through the furnacedoor and carrying the branch or burner pipe 2, which extends in the space between the front wall of the oven and. the walls V V of the furnace. The front walls of the oven, on the interior corners thereof, are cut away to enlarge the passages between the furnace side walls and the furnace-box, these passages being indicated at W.

U indicates the passages between the furnace and the vertical fines P P, these passages merging into the passages W.

It is to be observed that the heat from the furnace will pass over the walls V V and around the rear thereof to the fines or passages U U, whence they enter the vertical flues P P, the latter having communication with the several heating-chambers by virtue of the openings R R and through which the heat enters the said heating-chambers. Likewise at the rear of the oven the heating-chambers communicats with the exhaust-flueD by virtue of openings or passages R R, and the heat upon entering said flue will exhaust. By reason of the heat being introduced into the front portion of the oven it will naturally be greater at that point, which effects the bread by giving the same an even color.

The accompanying drawings illustrate the most practical form of embodiment of the in- Vention which suggests itself at the present time, modifications being permissible within the scope of the claim.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is I A baking-oven consisting of a plurality of 

